Weather in South Barrington, IL
South Barrington, Sunday, 9 August, 10:06
Mostly clear. Feels like 78°. High 86°, low 62°.
Monthly outlook for South Barrington, IL: average high 78.6°, average low 62.3°. That is 0.7° below the climate normal for August. Precipitation is expected on 8 days (about 3.2 inches), against a normal of 6 days and 1.8 inches. The warmest day looks like 10 August (89.8°), the coolest 23 August (55.5°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 9 August – 18 August | 79.6° | 79.8° | -0.1° |
| 19 August – 28 August | 76.9° | 79.9° | -1.7° |
| 29 August – 7 September | at normal | 78.1° | — |
August records over 66 years
Climate normals and records are computed from the nearest reference point — Elgin (9 mi).
0.69
South Barrington, Monday, 10 August
Heavy rain. High 90°, low 71°.
1.03South Barrington, Tuesday, 11 August
Heavy rain. High 84°, low 65°.
0South Barrington, Wednesday, 12 August
Light rain. High 84°, low 63°.
0.09South Barrington, Thursday, 13 August
Light rain. High 74°, low 63°.
0
South Barrington, Friday, 14 August
Overcast. High 73°, low 60°.
0.06South Barrington, Saturday, 15 August
Light rain. High 76°, low 62°.
0.25South Barrington, Sunday, 16 August
Rain. High 75°, low 64°.
0South Barrington, Monday, 17 August
Overcast. High 77°, low 63°.
0South Barrington, Tuesday, 18 August
Overcast. High 78°, low 60°.
0.01South Barrington, Wednesday, 19 August
Light rain. High 74°, low 63°.
0.16South Barrington, Thursday, 20 August
Light rain. High 74°, low 60°.
0.2South Barrington, Friday, 21 August
Rain. High 78°, low 60°.
0.02South Barrington, Saturday, 22 August
Light rain. High 80°, low 64°.
0
South Barrington, Sunday, 23 August
Clear. High 76°, low 55°.
0South Barrington, Monday, 24 August
Clear. High 79°, low 60°.
0.08
South Barrington, Tuesday, 25 August
Climate normal for this date — 60-year average.
0.16
South Barrington, Wednesday, 26 August
Climate normal for this date — 60-year average.
0.11South Barrington, Thursday, 27 August
Climate normal for this date — 60-year average.
0.13South Barrington, Friday, 28 August
Climate normal for this date — 60-year average.
0.13South Barrington, Saturday, 29 August
Climate normal for this date — 60-year average.
0.11South Barrington, Sunday, 30 August
Climate normal for this date — 60-year average.
0.09South Barrington, Monday, 31 August
Climate normal for this date — 60-year average.
0.12South Barrington, Tuesday, 1 September
Climate normal for this date — 60-year average.
0.04South Barrington, Wednesday, 2 September
Climate normal for this date — 60-year average.
0.09South Barrington, Thursday, 3 September
Climate normal for this date — 60-year average.
0.1South Barrington, Friday, 4 September
Climate normal for this date — 60-year average.
0.07South Barrington, Saturday, 5 September
Climate normal for this date — 60-year average.
0.12South Barrington, Sunday, 6 September
Climate normal for this date — 60-year average.
0.09South Barrington, Monday, 7 September
Climate normal for this date — 60-year average.
About the monthly outlook
How accurate is a 30-day forecast?
The first 16 days come from weather models — reliable for the first 3–5 days and progressively less so after that. Days 17 through 30 for South Barrington, IL are built from the climate normal, the 60-year average, so they show typical weather for those dates rather than a specific forecast.
What does "above normal" mean?
We compare the forecast against the climate normal for those exact calendar days, computed from 60 years of observations. The deviation shows how much the coming month differs from a typical one.
Where do the 66-year records come from?
They are real temperature extremes recorded in South Barrington, IL since 1960: the highest and lowest reading for each calendar date, with the year it happened.
How often is it updated?
The forecast portion refreshes every hour; the climate portion is based on long-term data and stays stable.
Sun and moon today
Weather history
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